Step 1

Whirl yogurt, chopped cucumbers, herbs, lemon juice, 3/4 cup ice cubes, and the salt in a blender until smooth.

Step 2

Pour cucumber purée into 4 tall glasses (12-oz. size). Fill glasses with club soda and stir. Add more ice if you like, and garnish with cucumber slices.

Step 3

Make ahead: Through step 1, up to 4 hours, chilled airtight; stir before using.

Step 4

Note: Nutritional analysis is per serving using nonfat yogurt.